Operation; Operating Concept - Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

6 Operation

8. Wire the unit. (→ Page 15)
9. Screw the supplied plug (1) to a three-core power sup-
ply cable that complies with the relevant standards.
10. Plug the plug for the power supply cable into a suitable
plug socket.
11. Make sure that access to the power supply is always
available and is not covered or blocked.
12. Close the electronics box.
5.6.5 Connecting controllers to the electronic
system
1 Safety thermostat for
underfloor heating
2 24 V (ON/OFF) control
1. Open the electronics box (→ Page 14).
2. Wire the unit. (→ Page 15)
3. Connect the individual components depending on the
type of installation.
16
R T
N
L
1
L N
RT
X1
230V~
24 V BUS
– +
Burner 24V=
off
RT BUS
1 2 3
X106
X41
X22
4
3 eBUS controller or radio
receiver unit
4 Outside temperature
sensor, wired
Conditions: If you are connecting a controller (230 V).
▶
Connect the controller to the main plug.
▶
Remove the bridge from the plug 24V=RT.
4. Close the electronics box.
Conditions: Connecting a limit thermostat for underfloor heating
▶
Remove the bridge and connect the limit thermostat to
the Burner off connection.
▶
Close the electronics box.
▶
For multi-circuit controllers (→ Page 17), change the
parameter d.18 from Eco (intermittently operating pump)
to Confort (continuously operating pump).
5.6.6 Connecting additional components via
VR 40 ("2 in 7" multi-functional module)
1. Install the components in accordance with the respect-
ive instructions.
Conditions: Components connected to relay 1
▶
Activate (→ Page 17) D.27.
Conditions: Components connected to relay 2
▶
Activate (→ Page 17) D.28.
6 Operation
6.1

Operating concept

The operating concept and the display and setting facilities
of the operator level are described in the operating instruc-
tions.
An overview of the display and setting options in the installer
level can be found in the section "Overview of the installer
level". (→ Page 17)
Installation and maintenance instructions ecoTEC sustain 0020253094_01
X1
L N
RT
230V~